Decoding Motorola Telementry

[Joseph11]

On my local trunked system, there is some type of Motorola Telementry that controls a Sprinkler System. Is there any way to decode this data? I attached a sample of the data. Thanks.

 

[SCPD]

Looks to be bursts of square wave at roughly 300 baud. With a little patience and a program like Cakewalk, someone could look for a sync pattern at the start of each burst. After that, who knows what structure was used in the bits that follow.

 

[WayneH]

The problem with decoding data such as this is that it is specific per data system. What it tells you won't be something you can figure out unless you know someone that works on the system.

I believe it's MOSCAD btw. http://www.moscad-systems.com/

-Wayne

 

[KB8UYC]

I am not trying to sound rude or anything, but Why would you want to decode it? What would the point be? There would be nothing to do even if you could decode it??

Eric

 

[pfish]

I am not trying to sound rude or anything, but Why would you want to decode it? What would the point be? There would be nothing to do even if you could decode it??

Eric

He's probably just bored or something

Its like, people like to listen to race cars, utility companies, cell phones, and even a regular (music) radio. I personally don't like to listen to those. Other people do and I don't understand why.. I probably never will either, but its their choice, not mine.

 

[N_Jay]

He's probably just bored or something

Would have to be very bored!!


163d4 on
274a3 off
68b43 .57
8da34 off

 

[Joseph11]

Yes, I'm very bored. Thanks for all the replies.

N_Jay: What are those values that you posted?

 

[N_Jay]

Yes, I'm very bored. Thanks for all the replies.

N_Jay: What are those values that you posted?

Miscellaneous BS. The idea is that all you would see is port locations and commands. All of which would just be numbers (probably natively in Hex).

So;
port 12345 turn on

Port 12345 turn off

Etc, you wont know whether a particular port is the tower light or the command to dump raw sewage into the nearby stream.

 

[Joseph11]

Thanks. I thought it would be eaiser, but I guess not. I have another question for now. Is there any way to decode the low-speed subaudible data on analog Motorola Voice Channels?

 

[Al42]

Is there any way to decode the low-speed subaudible data on analog Motorola Voice Channels?

There has to be, since that's how the Pro-92 tracks a Motorola trunked system.

 

[WayneH]

Thanks. I thought it would be eaiser, but I guess not. I have another question for now. Is there any way to decode the low-speed subaudible data on analog Motorola Voice Channels?

Yes, do you have a PRO96 or 2096? It already does it when you hold on a trunked voice conversation.

There isn't much to the data. All it says is which talkgroups are active on the system, and it also trims them slightly (Search for posts by me on Priority Monitor).

It's not really worth the time to code it. What I'm really waiting for is something to decode the administrative data side to P25 voice streams. A NAC decoder, yeah, now that's the ticket.

-Wayne

 

[Joseph11]

I actually have an original PRO-92, which uses subaudible data for all Motorola Trunking.


A P25 voice decoder for Windows, yeah, that's really the ticket.

 

[jimyleg]

That is the ticket